Reptiles are found throughout the rainforest. Although the Green anaconda and Orinoco crocodile are both approximately 14 feet in length, the heavy Orinoco crocodile is the largest predator in South America. Several clutches of crocodiles have hatched at The Dallas World Aquarium and will be returned to their native habitat for release into the wild.
 
Tortoises and turtles share habitats with birds, mammals and fish. Red-footed tortoises, Mata mata and Yellow-headed Amazon turtles can be seen in the understory. Living in the River exhibit at the aquatic level is the Arrau turtle, the largest of the side-necks. These now endangered turtles were once a plentiful and valuable food source in their native habitat.
 
The flat, "stepped-on" looking Surinam toad is quite in contrast to the plump, "all mouth" Ornate horned frog. Representing most colors of the rainbow are multiple species of poison frogs – Blue and black, Blue, Dyeing, Yellow and black, Green and black, Imitator, and Golfodulcean. The D. azureus, D. tinctorius, D. leucomelas and D. auratus are only a few examples of the prolific Dendrobatidae family in the rainforest.
 
An interesting amphibian is the limbless Caecilian that resembles a worm when young and a snake as it becomes larger.
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